Surface condenser



March 2 1926. 1,575,310

P. A. B ANCEL SURFACE CONDENSER Original Filed Oct. 15 1924.

INVENTOR.

D H/S ATTOR EY Patented Mar. 2, 1926. f

UNITED". STATES PATENT cu r es;

IAUL A. BAHCEL, OI NUTLEY, NEW JERSEY, ASSIGNOR TO INGEBSOLL-MND OOH- YANY, O1 JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SUBJACE CONDENSER.

To all whomz't may concern."

Be it known that I, PAUL A. Banana, a

citizen of the United States, and a resident of Nutley, countyof Essex, and State of- 5 New Jersey,'have invented a certain Surface Condenser, of which thefollowing is a specification accompanied by drawings.

This invention relates to surface condensers and more particularly to that type of surface condenser comprising surface cooler tubes extending longitudinally through a chamber across the path of the steam flow.

This application is a. division of co ending application of Paul A. Bancel, erial No. 743,695, filed October 15, 1924.

In single pass condensers having water tubes over which steam to be condensed passes or condensers so designed that all of the tubes passed over by the steam between the point of entrance of steam and the oint of exit of non-condensible va or an air have water flowing the same irection, the 'ubes are cooler at the inlet portions than at their outlet because in passing through the tubes, the water is warmed from the heat absorbed, and in condensing the steam the water tem 'erature' rises progressively along the length of the tubes in the direc tion of water flow. -The effect, of this temperature condition is to decrease the capacity of the water to condense steam in sections of the condenser relatively remote from'the water inlet. In condensers having two or more passes the conditions are identical if the flow is toward a central air outlet, or the same general effect is observed when the air outlet is at the end of the lqwer pass, for the reasonthat a greater part of tubes and the lower tubes condense a relatively small quantity of steam, their purpose being rather to cool the mixture of uncondenslble air and vapor.

As steam is condensed more. rapidly in the cool end of a singlepasa coil'denser than possible since the whole lowermost section the condensation. takes place in the upper is in free communication with the vacuum pump withdrawing the uncondensible gasesi The result in an ordinary single pass can; denser or any condenser-to a greater or less v extent is that steam does not come into'contact with the lowermost tubes at the cold end and thus condensers of this type heretofore have been ineiiicient to a certain ex,

tent in that there is provided a certain amount'of cooling surface which does not condense steam. If the vacuum pum is operated to draw steam downinto is e com.- denser into contact with all portions ofthe tubes, uncondensed steam will pass through-1 the warm end and be drawn from the outlet. This is undesirable since additional means must be provided to condense the steam 7 which has passed through the condenser. It is an object of this invention to apportion the steam in the various parts of the condenser so as to produce substantially the same depth of penetration throughout and to utilize the entire available cooling surface of the condenser. This object is accomplished in'this embodiment by suit 3 ably locating the steam inlet and the air and condensate outlet so that the greater part of the steam entering is directed at the cooler end of the condenser and situate the warmer sections of the condenser more remote from the inlet. I i

The inventionwill he more clearlyunders5 stood by reference to the accompanying drawing forming part of thespecification in which is illustrated a diagrammatic representationot an embodiment of the invention in which equal depth of penetration of no the steam through the condenser is obtained by the arrangement of the steam inlet and the outlet.

Referring to the drawing, the condenser consists of an outer shellA havin a steam inlet B and an outlet C for the withdrawal of condensate and uncondensible gases. The shell A is preferably long and is traversed by a plurality, of tubes D supplied with water from the water head E discharging into ahead F at the opposite end of the conde'nscn- The steam'pressure isiuniform everywhere in the inlet B. This pressure, which is a partial vacuum, is maintained by a suitable evacuating apparatus (not shown) which withdraws the condensate and unconand this application filed loei ty'of steam on entering at the inlet B causes the steam to tend to flow toward the cooler part. lHS produces an increased fl'ow or passage of steam to those vertical' sections in which the tendency of the steam is to penetrate less deeply on account of the greater heat absorbing capacity inthose sections. The flow or passage of steam in those vertical sections in which the heat alisex-hing capacity is less on tlCCflllllt tif the higher temperatures of the cooling water is reduced correspomlingly by increasing the natural length of the path traversed by the steam in those sections to prevent penetration beyond theclast hunk of cooling tubes.

I claim:

1. A condenser having tubes with differ ent temperatures along their length resulting in unequal capacities for condensing steam in vertical sections along their length,

and an inlet .for steam relatively remote from the warmer sections. to obtain suhstani tlally equal depth of steam penetrationuin all sections along theilength of the eon' denser. 4

A condenser having tubes with differ ent temperature along their length resulting in unequal ea 'iacitics for condensing steam in vertical sections along their length,

specification.

'- PAUL A. BANCIGL. 

